The Nokeval F-2021 series provides large‑field digital displays with 2‑6 digits, 16‑bit ADC, multiple sensor inputs and isolated power options.
The F-2021 digital display series is designed for temperature sensors and common process inputs, offering bright red LED displays that remain readable up to 100 m. Models vary by digit size (57 mm to 180 mm) and enclosure material, all with IP65 protection.
The device supports a wide range of inputs (thermocouples, Pt100/1000, Ni100, 0‑20 mA, 0‑10 V, potentiometers) and provides configurable outputs (0‑4‑20 mA, 0‑10 V, RS‑232/RS‑485). Power can be supplied from 85‑240 VAC or 24 VDC, both galvanically isolated, and the unit includes up to four alarm relays.
| ADC resolution | 16 bit |
|---|---|
| Display digits | 2‑6 digits |
| Power supply options | 85‑240 VAC or 24 VDC (galvanically isolated) |
| IP rating | IP65 |
| Temperature measurement accuracy | 0.01 % FS |
| Alarm relays | 2‑4 relays |
| Serial communication | RS‑232 and RS‑485 |
The unit can be powered from 85‑240 VAC or from a 24 VDC source, and both supplies are galvanically isolated from the inputs and outputs.
The display can show between 2 and 6 digits, with digit sizes ranging from 57 mm to 180 mm.
Supported inputs include thermocouples (B, C, D, E, G, J, K, L, N, R, S, T), Pt100/1000, Ni100, 0‑4‑20 mA, 0‑5/10 V, -10‑+10 V, and potentiometers.
The temperature measurement accuracy is 0.01 % of full scale.